Magnetic Vibration Isolation Mount and Method

ABSTRACT

The current invention is an improved magnetic vibration isolation mount and method that can provide a passive and active reduction in the actual and felt vibration transfer from one object to another. The vibration isolation mount is comprised of a mounting means for a first member, a mounting means for a second member, and a rod and magnetic field apparatus between the two mounts and members. The invention can also be seen as a method for the control of vibration transmission from a first member to a second member via either passive or active means.

CROSS-REFERENCE TO RELATED APPLICATIONS

Provisional Application No. 61/792,763 with Confirmation #9762

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable

REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTINGCOMPACT DISK APPENDIX

Not applicable

BACKGROUND OF THE INVENTION

The present invention is in the technical field of vibration dampening.More particularly, the present invention is in the technical field ofmagnetic fields that act to isolate vibration between two units. Thisinvention relates to the improvement of a magnetic vibration isolatingdevice and method.

There is often a need to reduce the transmission of vibrational forcesbetween two members of a structure or device while still maintainingsufficient mechanical support with the primary goal of reducing bothvibration and noise felt by equipment and persons.

There are many areas that have a need for the reduction in the transferof vibrational forces from one member to another member. One suchsituation involves the need to reduce noise and vibration transferbetween the many connection points found in an automobile such as thosebetween outside structural panels and interior trim, and between seatsand their mounts, and between the various engine and mechanical partsand the members to which they are mounted. Another situation involvesthe reduction of cabin vibration and noise found in conventionalaircraft whereas one of the major avenues for the transfer ofvibrational forces occurs at the mounts between the main air frame andinterior trim. Another situation involves the transfer of vibrationalenergy between different pieces of industrial and/or manufacturingequipment or tools and what they are mounted or connected to, and alsoto what they come into contact with, including persons.

A majority of the conventional vibration dampening devices often utilizesprings and/or liquid or gas pressure to create a reduction in shock andvibration. These devices all have different applications and all servefor the isolation of vibration between two surfaces. Typically thedevices are used when it is desirable to reduce the transfer of energyin the form of vibration between two surfaces that need to be attachedin a secure form while at the same time not carry over any of the energyof the vibration. Vibration dampening needs change according to theintensity of the frequency and amplitude of the vibrations, therefore adevice is often needed that can adjust or vary the amount of dampening.

Elastomeric, spring, air, liquid vibration isolating devices arecommonly used today as a mounting means for motors, engines and othermiscellaneous equipment. These vibration dampening devices range fromsimple spring based systems to complex elastomeric devices, however theyall have different issues and weaknesses. It is therefore an objectiveof the present invention to provide an improved mount and method forvibration reduction.

SUMMARY OF THE INVENTION

The present invention is an apparatus and method for magnetic vibrationisolation.

The invention may be conceptualized as a mount that will provide adampening effect between two objects or members that are joinedtogether. The general idea is that this mounting device will give asimple, sturdy and effective means of joining two surfaces or objectswith the transfer of vibration minimized from the first member to thesecond member. The magnetic vibration isolation mount comprises a firstand second mounting means for mounting the first and second memberrespectively. Magnets are arranged between the first and second mountingmeans and are coupled to each member, wherein the magnets are arrangedin a way that provides an opposing magnetic force between the twomembers.

The invention may also be conceptualized as a method as a vibrationdampening or isolation method. The method controls the amount ofvibration that is transmitted from the first member to the second memberwhen both members have the opposing magnets between the two members. Themagnet arrangement between the two members provides a delay andreduction in the transmission of vibration energy between the twomembers. The method comprises the steps of (1) sensing the vibrationenergy and force in one member; (2) applying a force on the secondmember in response to the sensed vibrational energy in the first memberin order to reduce vibrations; (3) allowing for the storage of energyduring normal vibrations of the first member in order to have the powerstorage necessary to efficiently counteract force with the second memberfrom an unusually violent sensed vibration episode of the first member.

In one embodiment, the mount could just simply be used to control thetransfer of vibration energy across one plane or axis. In anotherembodiment the mount could be utilized to limit the transfer ofvibration across multiple axes and directions. In another embodiment themount could not only be used to control vibration but it could utilizethe vibration energy altering the magnetic field it is in to createelectricity and could provide a means for both the storage and releaseof this electrical energy. In yet another embodiment involving thestorage of electrical energy the energy could be released in aparticular violent episode of vibration energy in an attempt to increasethe available vibration dampening capacity for that particular episode.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of one embodiment of a magnetic vibrationisolation mount of the present invention.

FIG. 2 is a top view of one embodiment of a magnetic vibration isolationmount of the present invention.

FIG. 3 is a front view of another embodiment of a magnetic vibrationisolation mount of the present invention.

FIG. 4 is a front view of another embodiment of a magnetic vibrationisolation mount of the present invention.

FIG. 5 is a front view of another embodiment of a magnetic vibrationisolation mount of the present invention.

FIG. 6 is a front view of another embodiment of a magnetic vibrationisolation mount of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In the following detailed description of the preferred embodiments,reference is made to the accompanying drawings which form a part hereof,and within which are shown by way of illustration specific embodimentsby which the invention may be practiced. It is understood that otherembodiments may be utilized and structural changes may be made withoutdeparting from the scope of the invention.

Turning now to the drawings wherein like numbers refer to like featuresthroughout the drawings, the present invention comprises a magneticvibration isolation mount.

Referring now to the invention in more detail, in FIG. 1 there is shownan front view of a magnetic isolation mount composed of a mountingbracket 5 intended to secure one side of the mount assembly to a firstmember 1 and another mounting bracket 6 intended to secure another sideof the mount assembly to the second member 2. The two mounting brackets5,6 have magnets 7, 8 mounted through a connecting rod or bolt 3 withthe magnetic poles facing each other in order to apply a repealing forcebetween the two magnets 7,8 and therefore the repealing force will carryover to the two mounting brackets 5,6 and the corresponding members 1,2.The two mounting brackets 1,2 are held together structurally with athrough rod/bolt 3 and a nut or tightening device 4. This nut 4 may betightened in order to bring the two magnets 7,8 together and get ahigher level of repulsion or may be inversely loosened in order to lowerthe level of repulsion. The mounting brackets 5,6 can be secured to themembers 1,2 through various different means including bolts, screws,welds, glues, etc. Although in this preferred embodiment of the currentinvention the repulsion is shown to occur between two permanent magnets7,8, in another embodiment the magnets 7,8 may be electromagnetscontrolled by a circuit in order to increase or decrease the level ofrepulsion and therefore the transfer of vibrational forces between thetwo members 1,2. In another embodiment the strength and size of themagnets can be readily swapped for differing applications or loads andthe adjustment of the nut or tightening device 4 would result indiffering repulsion strengths. Although in this preferred embodiment ofthe current invention the mount is shown to connect two members 1,2across one axis, in another embodiment the current invention can beutilized to connect members across multiple axes. In another embodimentof the current invention a shielding may be in place to prevent magneticfield interference with surrounding materials.

Referring now to the invention shown in FIG. 2 there is shown a top viewof the current invention. In this top view embodiment of a portion ofthe current invention the mounting bracket 5 is shown to have mountingholes in order to secure the bracket to a member. The rod or bolt 3 isshown to exist in order to hold the two brackets and magnet assembliestogether structurally, this rod or bolt 3 is also shown holding themagnet 7 to the mounting bracket 5.

In another embodiment, and as depicted in FIG. 3, a wire coil 9 is shownto exist wrapped around the rod or bolt 3 section of the mount. Thiswire coil 9 may act as a means to harness the electrical energygenerated by the changing magnetic field caused by the continuing changein distance between the two magnets 7, 8 and with the storage of theenergy occurring in a capacitor device 11. This means of harnessingelectrical energy with a changing magnetic field is well documented inprior art. In another embodiment utilizing electromagnets in the placeof magnets 7, 8 a sensor arrangement 10 is shown that would sensevibrations in the first member and the subsequent transfer of force intothe second member, a controller actuator arrangement 12 to handle andproduce the proper control of the force to the second member and for thesetting of parameters necessary for a proper response to a vibrationalforce detected by the sensor arrangement 10. In this embodiment, thenecessary amount of stored electrical energy could be released in aparticular violent episode of vibration energy sensed from the firstmember in an attempt to increase the available vibration dampeningcapacity for that particular episode. The magnet arrangement may beadapted to provide a delay equal to that delay in the application of thecontrolling force in response to the sensed vibrations in the firstmember. This entire invention in any of the embodiments presented may bemade of virtually any material (fiberglass, metal, plastic, foam, glassor wood) and be of the dimensions sufficient to efficiently contain allthe components of the present invention without limitation.

Referring now to the invention shown in FIG. 4 there is shown yetanother side view of another embodiment of the present invention. Inthis embodiment, a long term electrical energy storage device or battery13 is shown in conjunction with the short term capture device orcapacitor device 11 and the controller actuator arrangement 12. Thisembodiment would allow for the long term storage of the difference inelectrical energy generated and that energy needed to counter thevibrational forces from the first member.

In FIG. 5 the current invention is shown in another embodiment that itmay be further equipped with another bracket 14 that contains additionalmagnets 15 arranged in such a way that the poles opposed the poles ofthe other additional magnets 16, 17 placed on the bolt/rod 3 of themount. The intention of these additional magnet arrangements is for thestability and vibration dampening capacities of the mount in a differentplane from the plane of mounting plates 5,6. Basically, these new magnetarrangements and their magnetic fields should act to further stabilizethe mount in other directions or along other axes than the primarydirection or axis demonstrated by the arrows on the illustration.

In FIG. 6 the current invention is shown in another embodiment that itmay be further equipped with yet another mounting bracket 19 intended tosecure one side of the mount assembly to the second member 18 and as asupport for another assembly of rods/bolts 21 nuts 22 and magnets 23, 24as described in FIG. 1, but arranged in another plane or axis as theother rod 3, nut 4 and magnets 7, 8. In this embodiment, the twodirectional mount would act to more effectively handle vibrationdampening from multiple directions. Although in this embodiment the unitis shown to contain just two bolts, nuts and magnet assemblies, onefamiliar in the art will understand that these magnet vibrationreductions assemblies can be arranged in a plurality of configurationsalong different axes.

The advantages of the present invention include, without limitation, isthat it provides for a simple yet effective means of vibration dampeningbetween multiple members. The mount will help to eliminate the transferof vibrational forces from one object to another or a plurality of otherobjects through the connecting mount. The mount may also be used toharness electrical energy and to counteract extraordinary shocks fromone member to another by applying additional forces when needed.

In broad embodiment, the present invention is a magnetic vibrationisolation mount and method. This mount and method will allow thereduction in actual and felt vibration transfer from one object toanother and may act to significantly reduce wear and tear on otherobjects, surfaces or persons due to the this reduction in vibrationenergy.

While the foregoing written description of the invention enables one ofordinary skill to make and use what is considered presently to be thebest mode thereof, those of ordinary skill will understand andappreciate the existence of variations, combinations, and equivalents ofthe specific embodiment, method, and examples herein. The inventionshould therefore not be limited by the above described embodiments,methods, and examples, but by all embodiments and methods within thescope and spirit of the invention. All such modifications and variationsare intended to be included within the scope of this disclosure of thisinvention and are protected by the following claims.

The following is claimed:
 1. A passive vibration isolation mount formounting a first member to a second member and for reducing thetransmission of vibrations between the two members, the vibrationisolation mount consisting: of a mounting means for mounting to saidfirst member; a second mounting means for mounting to second saidmember; a rod or bolt assembly arrangement between the said first andsecond mounting means; a magnetic or electromagnetic assembly onopposing sides of the rod or bolt assembly; wherein the magneticassemblies are arranged so that the like polarity magnetic poles arefacing each other and act as a form of magnetic spring; a wire coilwrapped around the said rod or bolt section of the said mount; a meansfor storage of energy to be generated from a changing magnetic field. 2.An active vibration isolation mount for mounting a first member to asecond member and for reducing the transmission of vibrations betweenthe two members, the vibration isolation mount consisting: of a mountingmeans for mounting to said first member; a second mounting means formounting to second said member; a rod or bolt assembly arrangementbetween the said first and second mounting means; a magnetic orelectromagnetic assembly on opposing sides of the rod or bolt assembly;wherein the magnetic assemblies are arranged so that the like polaritymagnetic poles are facing each other and act as a form of magneticspring; a means for sensing vibrations in said first member and passingthis information to a controlling means; a means for applying a certainforce at a certain delay to said second mounting means in response to asignal from the control means in response to the vibrations in saidfirst member; a wire coil wrapped around the said rod or bolt section ofthe said mount; a means for storage of energy necessary to counteractsensed vibrations along with storage of additional energy.
 3. A passiveor active vibration isolation mount according to claims 1 and 2, whereinthe mount described contains a plurality of magnetic vibrationalassemblies along a plurality of different axises.
 4. A passive or activevibration isolation mount according to claims 1 and 2, wherein the mountis placed between inner and outer trim panels of a boat.
 5. A passive oractive vibration isolation mount according to claims 1 and 2, whereinthe mount is placed between inner and outer trim panels of a airplane.6. A passive or active vibration isolation mount according to claims 1and 2, wherein the mount is placed between inner and outer trim panelsof a automobile.
 7. A passive or active vibration isolation mountaccording to claims 1 and 2, wherein the mount is placed between any twosurfaces that must be mounted together on a boat.
 8. A passive or activevibration isolation mount according to claims 1 and 2, wherein the mountis placed between any two surfaces that must be mounted together on aairplane.
 9. A passive or active vibration isolation mount according toclaims 1 and 2, wherein the mount is placed between any two surfacesthat must be mounted together on a automobile.
 10. A passive or activevibration isolation mount according to claims 1 and 2, wherein the mountis placed between any two surfaces that must be mounted together onmultitudes of machinery or factory equipment.
 11. A passive or activevibration isolation mount according to claims 1 and 2, wherein the mountis placed between any two surfaces that must be mounted together onmultitudes of farm equipment.
 12. A method for vibration isolationbetween two surfaces using the invention claimed in either claims 1 and2, wherein the method comprises: sensing vibrations in first member;applying a force to second member in response to the sensed vibrationsin the first member in order to reduce the transmission of thosevibrations to the second member; wherein the magnetic spring impartedfrom the like pole facing magnets or electromagnets provides a delay andforce comparable to the sensed vibration in the first member to thesecond member; the changing magnetic field from the two surfaces andtheir respective magnet mounts changing position is utilized to generateenergy; wherein said energy is stored in a capacitor device; whereinsaid capacitor can either transfer energy back to the said magneticspring in order to counteract sensed vibration or said capacitor cantransfer energy to a long term storage device.
 13. A method according toclaim 12, wherein the passive mount of claim 1 is sized appropriatelyfor the anticipated vibrational energy and load.
 14. The mount of claims1 and 2, wherein the rod or bolt assembly consists of an elastomericcompound.
 15. The mount of claims 1 and 2, wherein the rod or boltassembly consists of a plastic.
 16. The method of claim 12, wherein thetwo members are connected in one direction by means offering lowstiffness and low transfer of vibrational energy and a higher stiffnessin the perpendicular direction.
 17. The method of claim 12, wherein thecontrol signal is generated in response to the sensed vibration energy.18. The method of claim 12, wherein an opposing force is applied usingan electromagnetic actuator.
 19. The method of claim 12, wherein a wirecoil in the magnetic field may act as a means to harness the electricalenergy generated by the changing magnetic field caused by the continuingchange in distance between the magnets.
 20. The method of claim 12,wherein the said sensor, magnetic spring assembly, controller andactuator are to provide broadband vibration isolation between twosurfaces.